US Patent No. 9,118,224

STATOR FOR ROTARY ELECTRIC MACHINE


Patent No. 9,118,224
Issue Date August 25, 2015
Title Stator For Rotary Electric Machine
Inventorship Takeomi Okimitsu, Wako (JP)
Assignee HONDA MOTOR CO., LTD., Tokyo (JP)

Claim of US Patent No. 9,118,224

1. A stator for a rotary electric machine, comprising:
a stator core in a sleeve shape with a plurality of slots formed at an inner circumferential surface thereof;
a plurality of coil segments received by the slots;
a plurality of first coil end plates electrically connected with the coil segments on either one of end surfaces of the stator
core; and

a plurality of second coil end plates electrically connected with the coil segments on the other end surface of the stator
core,

wherein each of the coil segments comprises connecting end portions protruding respectively from the one and the other end
surfaces of the stator core,

wherein each of the first coil end plates comprises:
a plate portion in a flat plate shape extended along a circumferential direction of the stator core; and
a pair of extended portions respectively extended along a radial direction of the stator core from one end side of the plate
portion such that the connecting end portions of the corresponding coil segments are connected to the pair of extended portions,

wherein the plurality of first coil end plates and the plurality of second coil end plates are disposed being laminated on
the corresponding end surfaces of the stator core,

wherein the plate portion of at least one of the plurality of first coil end plates is formed longer along the circumferential
direction of the stator core than the plate portions of the other first coil end plates and has a stepped portion, and

wherein the plate portion having the stepped portion is disposed such that an end portion thereof extending from the stepped
portion overlaps with the first coil end late that forms a neighboring coil turn in an axial direction of the stator core,
the end portion and the extended portion extending from the end portion intersect the first coil end plate that forms the
neighboring coil turn in the axial direction of the stator core.